EDS12-2M

ELECTRO-PNEUMATIC CONVERTER DATA SHEET The electro-pneumatic converter installed in site converts a 4 to 20mA DC operation signals from an electronic controller into proportional 19.6 to 98.1 kPa {0.2 to 1.0kgf /cm2} pneumatic signals for transmitting to pneumatic positioner, or operating pneumatic final control elements such as diaphragm valves, etc. ZLC FEATURES 1. High conversion accuracy The guaranteed conversion accuracy is within 0.75%. 2. Various types Flame-proof type, intrinsically safe explosion-proof type, split range type, etc. are available. 3. A low input resistance of 200Ω permits two converters to simultaneously operate. SPECIFICATIONS Input signal : 4 to 20mA DC, 4 to 12mA DC or 12 to 20mA DC Input resistance : Approx. 200Ω (at 20˚C) Accuracy rating : ± 0.75% of full range Hysteresis : 0.5% of full range Response time : Approx. 0.7 sec (90% time of full range when the load capacity ia 0.5R) Air supply pressure and output signal : Air supply pressure [kPa] {kgf/cm2} 140 {1.43} 240 {2.45} Output signal [kPa] {kgf/cm2} 19.6 to 98.1 {0.2 to 1.0} 39.2 to 196.1 {0.4 to 2.0} Output signal pressure gauge : As specified by the customer JIS class 3 with the graduation angle of 270˚ Input/output operations : As specified by the customer Normal action; The output signal level increases as the input signal level increases. Reverse action; The output signal level decreases as the input signal level increases. Nominal air consumption : 12NR /min (at the supply air pressure of 140kPa{1.43kgf/cm2}) 20NR /min (at the supply air pressure of 240kPa{2.45kgf/cm2}) Maximum air consumption : 60NR /min (at the supply air pressure of 140kPa{1.43kgf/cm2}) 80NR /min (at the supply air pressure of 240kPa{2.45kgf/cm2}) Ambient temperature : –20 to +80˚C Intrinsically safe explosion-proof type; –20 to +60˚C Flame-proof type; –20 to +70˚C Ambient humidity : Less than 95% RH External dimensions (H × W × D) : 176 × 176 × 124mm Mas{weight} : Approx. 3kg Air pipe connection : Rc1/4 or NPT1/4 adapter EDS12-2m Date Mar. 31, 1999 ZLC Conduit connection : G1/2 Waterproof structure : Splash proofing (JIS C 0920) Explosion-proof structure : Intrinsically safe explosion-proofing (JIS i3nG5) Flame-proofing (JIS d2G4) Finish color : Silver (epoxy resin coating) Acid and alkali-proofing treatment : Mounting U-bolts, nuts and washers made of stainless steel are used upon request Mounting method : Connected to pipe 50A (2B) or mounted on the wall. FUNDAMENTAL BLOCK DIAGRAM Signal current Torque motor Force Balance Displacement beam Nozzle pilot valve Output air pressure Feedback bellows CODE SYMBOLS 12345678 9 10 11 ZLC 1 2 3 5Input signal 4 to 20mA DC 4 to 12mA DC 12 to 20mA DC Description C or F in 5th digit is not available A C D F Output signal: input/output operation: air supply pressure 19.6 to 98.1 kPa (normal action) ... 140kPa {1.43kgf/cm2} {0.2 to 1.0kgf/cm2} 39.2 to 196.1 kPa (normal action) ... 240kPa {2.45kgf/cm2} {0.4 to 2.0kgf/cm2} 98.1 to 19.6 kPa (reverse action) ... 140kPa {1.43kgf/cm2} {1.0 to 0.2kgf/cm2} 196.1 to 39.2 kPa (reverse action) ... 240kPa {2.45kgf/cm2} {2.0 to 0.4kgf/cm2} Y A B Explosion-proof structure For general use (Non-explosion-proof) Intrinsically safe explosion-proof structure (JIS i3nG5) Flame-proof structure (JIS d2G4 conduit pressure-resisting screw-coupled type lead in system) Flame-proof structure (JIS d2G4 flame-proof packing connection type) 0 1 0 1 Y A Y A Output signal pressure gauge Non provided Provided Treatment For general use Acid and alkaliproof treatment Air set Non provided Provided Air pipe connection RC 1/4 NPT 1/4 adapter C OUTLINE DIAGRAM (Unit: mm) 47.5 124 180 100 E SUP SUP 161 166 OUT 80 Zero adjustment Output signal pressure gauge as specified 177 100 E 45 Mounting pipe JIS 2B Air pipe connections Conduit connection 2- Rc1/4 G1/2 or NPT1/4 adapter "A" 47.5 124 55 80 SUP 174 179 OUT 80 Zero Air pipe connections *Cable gland adjustment 2- Rc1/4 or "B" "A" Mounting NPT1/4 Output signal Conduit connection Conduit connection adapter 1/2 pipe pressure gauge G G1/2 JIS 2B as specified Note: *shows the part used for the flame-proof packing type which used for 11mm diameter cable. 45 Details of "A" φ15 Details of "B" φ13 55 Commection diagram 6 E I- I+ G1/2 15 G1/2 17 Input signal ZLC Air set as specified 47.5 124 177 100 112 179 55 E 80 OUT 80 Air supply Zero adjustment Output signal pressure gauge as specified 45 Air pipe connections 2- Rc1/4 Mounting pipe JIS 2B "A" *Cable gland Conduit "B" connection Conduit connection G1/2 G1/2 Note: *shows the part used for the flame-proof packing type which used for 11mm diameter cable. Details of "A" φ15 Details of "B" φ13 Commection diagram 6 E I- I+ 15 G1/2 G1/2 17 Input signal RELATED DEVICES Electro-pneumatic positioner Diaphragm type control valve Opener (FXZ2 type) ORDERING INFOMATION 1. Product name 2. Code symbol 3. Other requirements Caution on Safety *Before using this product, be sure to read its instruction manual in advance. Head Office 6-17, Sanbancho, Chiyoda-ku, Tokyo 102-0075, Japan http://www.fesys.co.jp/eng Sales Div. International Sales Dept. No.1, Fuji-machi, Hino-city, Tokyo, 191-8502 Japan Phone: 81-42-585-6201, 6202 Fax: 81-42-585-6187 http: //www.fic-net.jp/eng Information in this catalog is subject to change without notice. Printed in Japan